共 15 条
[1]
ALBERMAN E, 1980, LANCET, V2, P189
[2]
BAIRD D, 1954, J OBSTET GYN BRIT EM, V61, P433
[3]
Baird D, 1977, Health Bull (Edinb), V35, P234
[4]
Bakketeig LS, 1984, PERINATAL EPIDEMIOLO, P99
[5]
BARRON SL, 1974, J OBSTET GYN BR COMM, V81, P187
[6]
FERSTER G, 1976, LANCET, V2, P727
[7]
GREENWOOD AM, 1987, B WORLD HEALTH ORGAN, V65, P635
[8]
HARRISON KA, 1979, LANCET, V2, P1229
[9]
LANG J R, 1970, Journal of Obstetrics and Gynaecology of the British Commonwealth, V77, P427
[10]
MALLET R, COMMUNITY MED, V1, P6